In the third-worst weekend at the box office since 2000, not a single film managed to crack the $10-million mark, according to studio estimates released on Sunday. With the top 12 films together grossing only an estimated $51.93 million, only the comparable weekend in 2008 and the weekend of Sept. 21-23 in 2001 produced lower amounts, $43.5 million in 2001 and $50.26 million in 2008. (In 2000 the total for the top 12 on the weekend following Labor Day was $45.08 million, but the average price of a theater ticket back then was $5.39 versus $7.93 as of 2011.) Actual attendance was likely the worst in modern history. The top film at the box office this weekend was Lionsgate's horror flick The Possession with an estimated $9.5 million, keeping it well ahead of the competition for the second week in a row. Lawless finished in second place with just $6 million. Two new films opened poorly. The Words placed third with $5 million and The Cold Light of Day finished out of the running with just $1.8 million. Some IMAX theaters were not deserted, however. The restored 1981 classic Raiders of the Lost Ark , playing on 267 IMAX screens for one week only in advance of its re-release on Home Video on Sept. 18, took in $1.7 million -- an average of $6,460 per theater. By contrast, The Possession averaged $3,352 per theater.